#ifndef COMPILER_ONLINE
#include "basic_code.cpp"
#endif

void Test1()
{
    int res = Solution().factorial_sum(4);
    if (res == 33)
    {
        std::cout << "Test 1 .... OK" << std::endl;
    }
    else
    {
        std::cout << "Test 1 .... Failed" << std::endl;
    }
}

void Test2()
{
    int res = Solution().factorial_sum(2);
    if (res == 3)
    {
        std::cout << "Test 2 .... OK" << std::endl;
    }
    else
    {
        std::cout << "Test 2 .... Failed" << std::endl;
    }
}

int main()
{
    Test1();
    Test2();

    return 0;
}